Sister got a pellet stove. Needs 7" hole cut in side of house. I need a 7" hole saw, right? Can't seem to find one that big. Any suggestions? Thanks.
JP
Sister got a pellet stove. Needs 7" hole cut in side of house. I need a 7" hole saw, right? Can't seem to find one that big. Any suggestions? Thanks.
JP
Use a saber saw.
Draw a line around the stove pipe and use a jig saw.
Rental Agency
Through what material? If there are studs in the way a reciprocating saw is likely the right too. If not a sabre saw, or if a really clean hole is wanted, I've used a spiral saw (RotoZip) w/circle cutter with good results.
I think he just wants a permanent hole. ;-)
I sure hope that 7 inches is for a Class A flue pipe.
Pete Stanaitis
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Jay Pique wrote:
A compass, drill and jigsaw (or Sawzall or keyhole saw).
You are kidding aren't you?
Lew
First off... newbie alert. I may as well jump in though.
Most any of the suggestions so far will work fine. I've done it with recip. saw, jig saw, and router (and dremel with a router bit). The router requires a short piece of wood screwed to the router base and then the other end tacked in at the center of the circle. Obviously it takes a few passes and extra care on the final pass.
Ed
Brick or stone?
Kidding about what? I have a 6" hole saw. It takes a bit of work to use but it's not impossible. Check woodworking stores and big box lumber yards. You should find a 7" saw. It won't be cheap though.
Dave
Understand; however, 7" is a long way from 6" when you're talking about hole diameters.
BTW, 6" is the largest shown by Morse,
BTW, sure hope you have a SLOW right angle drill to handle that beast.
Lew
Even then, a 7" class A flue pipe will need 2" clearance from combustibles so that would make the hole 11" in diameter. If he is cutting wood, he needs a chimney fitting designed to fit into the wall to provide the necessary clearance and to cover the gap with a finished ring inside and outside.
Lew;
You are correct, it is a beast. Fortunately I only had to cut through about 1" of wood. Just use a light pressure and rock the saw in a circular motion.
Dave
Note that it is a pellet stove. The take a 3" flue so that works out to 7".
It doesn't make sense. A 3" flue plus 2" clearance on both sides can be 7". I don't know much about pellet stoves, but don't they need an insulated flue, at least 1" of insulation would give a 1" inside diameter on a 3" outside diameter flue. You cannot be just installing a 3" naked metal pipe through the walls or ceiling. Please clarify.
The two inches around the three inch pipe is the insulation clearance required for a zero clearance flue system. This insulation is accomplished by inserting the three inch flue pipe inside the seven inch through hull pipe. The two inch space between the inner and outer pipes provides room for cool air to flow and prevent the hot combustion gases inside the 3 inch pipe from causing charring and burning of the wall material.
Dave N
Yeah, that's the gist of it. I was half kidding about the hole saw, but I'd give it a shot if I could find one relatively cheaply. I'm just going through drywall, sheething and siding, so it's no big deal. I've seen some sort of abrasive saw that's 6.875", but no seven inchers even on google.
JP
You have that right. I bought a 4 1/8" at Lowe's about 5 yrs ago and it was $37! Choose another alternative.
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